package com.ljh.SimpleTradingSystem.interceptor;

import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String userId = String.valueOf(request.getSession().getAttribute("userId"));
        if (userId.equals("null")) {
            response.sendRedirect("/login");
            return false;
        }
        return true;
    }
}
